{
  "manageEntity": {
    "action": "Save",
    "entityId": "163115917",
    "entityType": "Track",
    "nonce": "0xdb641eef59595ba48c7102465873759554adc21943b154a887ecd0d873bc06b3",
    "signature": "0x0ed60db554e313f73ec4e4b1b4b2143c3635485e364efe42435b86f978f83b1b763642189dc22cfa63285b2c5389771f834272731daa2dde16b57dcae66fe9661c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}